US 11,754,156 B2
Drive device
Hiroyuki Inagaki, Takarazuka (JP)
Assigned to HI-LEX CORPORATION, Takarazuka (JP)
Appl. No. 17/287,806
Filed by HI-LEX CORPORATION, Takarazuka (JP)
PCT Filed Oct. 23, 2019, PCT No. PCT/JP2019/041509
§ 371(c)(1), (2) Date Apr. 22, 2021,
PCT Pub. No. WO2020/085375, PCT Pub. Date Apr. 30, 2020.
Claims priority of application No. JP2018-198824 (JP), filed on Oct. 23, 2018.
Prior Publication US 2021/0396300 A1, Dec. 23, 2021
Int. Cl. F16H 25/24 (2006.01); F16H 25/20 (2006.01); E05F 15/622 (2015.01)
CPC F16H 25/2021 (2013.01) [F16H 25/24 (2013.01); E05F 15/622 (2015.01)] 4 Claims
OG exemplary drawing
 
1. A drive device comprising:
a housing having a first connecting portion connected to a first base body;
a drive portion provided in the housing;
a spindle member to rotate by driving of the drive portion;
a nut member screwed with the spindle member; and
a moving member coupled to the nut member, wherein
the drive device has a rotation regulating portion which suppresses rotation of the nut member to move the nut member in an axial direction of the spindle member,
the moving member has a second connecting portion connected to a second base body, and a fragile portion to be broken by a predetermined force being weaker than a force required to break the nut member,
the fragile portion is formed such that the moving member is divided from the nut member in the axial direction when the fragile portion is broken,
the fragile portion is configured such that a fracture portion, with which the nut member is pressable by the moving member moving toward the drive portion, is formable when the fragile portion is broken,
the moving member is embedded into the nut member on one end side of the moving member so as to overlap the nut member in the axial direction, and
a plurality of openings are provided in a peripheral direction in a art where the moving member overlaps the nut member in the axial direction to form the fragile portion.